forked from OSchip/llvm-project
33 lines
963 B
LLVM
33 lines
963 B
LLVM
; REQUIRES: asserts
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; RUN: opt < %s -passes='unswitch<nontrivial>' -disable-output
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; RUN: opt < %s -simple-loop-unswitch -enable-nontrivial-unswitch -disable-output
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; Make sure we don't crash due to a dangling use of %tmp2 in bb7.
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define void @test.use_in_dead_block(i1 %arg1, i1 %arg2) {
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bb1:
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br label %bb2
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bb2: ; preds = %bb4, %bb1
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%tmp1 = phi i64 [ 0, %bb4 ], [ 42, %bb1 ]
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br i1 %arg1, label %bb3, label %bb6
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bb3: ; preds = %bb2
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br i1 %arg2, label %bb5, label %bb4
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bb4: ; preds = %bb3
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%tmp2 = add i32 1, 1
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br label %bb2
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bb5: ; preds = %bb3
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ret void
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bb6: ; preds = %bb2
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%tmp3 = add i64 %tmp1, 1
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ret void
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bb7: ; No predecessors!
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%tmp4 = add i32 %tmp2, 1
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ret void
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}
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